Stacked light emitting diode (led) hologram display

ABSTRACT

Embodiments of the present disclosure include apparatuses and method for a stacked light emitting diode (LED) hologram display. A stacked LED hologram display can include a first array of LEDs that are configured to emit red light received by a meta-optics panel configured to display a first portion of a holographic image, a second array of LEDs that are configured to emit green light received by a meta-optics panel configured to display a second portion of a holographic image, and a third array of LEDs that are configured to emit blue light received by a meta-optics panel configured to display a third portion of a holographic image. The stacked LED hologram display can include a number of actuators configured to adjust a position of a first array of LEDs in first direction and a second direction, adjust a position of a second array of LEDs in the first direction and the second direction, and adjust a position of a third array of LEDs in the first direction and the second direction.

PRIORITY INFORMATION

This application is a continuation of U.S. application Ser. No.17/102,760, filed on Nov. 24, 2020, then contents of which areincorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates generally to apparatuses, non-transitorymachine-readable media, and methods for a stacked light emitting diode(LED) hologram display.

BACKGROUND

Images can be viewed on display screens. Display screens can be includedin a computing device. A computing device is a mechanical or electricaldevice that transmits or modifies energy to perform or assist in theperformance of human tasks. Examples include thin clients, personalcomputers, printing devices, laptops, mobile devices (e.g., e-readers,tablets, smartphones, etc.), internet-of-things (IoT) enabled devices,heads-up displays, augmented reality and virtual reality devices, andgaming consoles, among others. An IoT enabled device can refer to adevice embedded with electronics, software, sensors, actuators, and/ornetwork connectivity which enable such devices to connect to a networkand/or exchange data. Examples of IoT enabled devices include mobilephones, smartphones, tablets, phablets, computing devices, implantabledevices, vehicles, home appliances, smart home devices, monitoringdevices, wearable devices, devices enabling intelligent shoppingsystems, among other cyber-physical systems.

A display screen can be included in a computing device, televisionmonitor, computer monitor and can be used to view images and/or text.The display can be a touchscreen display that serves as an input device.When a touchscreen display is touched by a finger, digital pen (e.g.,stylus), or other input mechanism, associated data can be received bythe computing device. The touchscreen display may include picturesand/or words, among others that a user can touch to interact with thedevice.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a functional block diagram a stacked light emitting diode(LED) hologram display in accordance with a number of embodiments of thepresent disclosure.

FIGS. 2 is a functional block diagram of a stacked light emitting diode(LED) hologram display including arrays of LEDs, meta-optics panels, anda number of actuators in accordance with a number of embodiments of thepresent disclosure.

FIGS. 3 is a functional block diagram of a stacked light emitting diode(LED) hologram display including arrays of LEDs, a meta-optics panel,and a number of actuators in accordance with a number of embodiments ofthe present disclosure.

FIGS. 4A-4B are functional block diagrams in the form of an apparatushaving a stacked light emitting diode (LED) hologram display including acontroller in accordance with a number of embodiments of the presentdisclosure.

FIGS. 5A-5C illustrate packing schemes of a stacked light emitting diode(LED) hologram display in accordance with a number of embodiments of thepresent disclosure.

FIG. 6 is flow diagram representing an example method for operating astacked light emitting diode (LED) hologram display in accordance with anumber of embodiments of the present disclosure.

DETAILED DESCRIPTION

Embodiments of the present disclosure include apparatuses and methodsfor a stacked lighting emitting diode (LED) hologram display. A stackedLED hologram display can include a first array of LEDs that areconfigured to emit red light received by a meta-optics panel configuredto display a first portion of a holographic image, a second array ofLEDs that are configured to emit green light received by a meta-opticspanel configured to display a second portion of a holographic image, anda third array of LEDs that are configured to emit blue light received bya meta-optics panel configured to display a third portion of aholographic image. The first, second, third arrays of LEDs can beconfigured to emit light on a number of meta-optics panels configured toproduce (e.g., display) a holographic image (e.g., by shaping andenhancing the light emitted by the arrays). A pixel of the stacked LEDdisplay can comprise an LED from the first array, an LED from the secondarray, and an LED from the third array that are in a common row andcolumn position of their respective array. For example, a pixel can becomprised of an LED in the first column and eight row of the firstarray, an LED in the first column and eight row of the second array, andan LED in the first column and eight row of the third array.

In a number of embodiments, the stacked LED hologram display can includea number of actuators configured to adjust a position of a first arrayof LEDs in a first direction (e.g., x direction) and a second directionorthogonal to the first direction (e.g., y direction), adjust a positionof a second array of LEDs in the first direction and the seconddirection, and adjust a position of a third array of LEDs in the firstdirection and the second direction. The actuators can be configured toadjust the position of the arrays of LEDs in the first direction and thesecond direction to control a packing scheme of the pixels of thedisplay. A packing scheme can refer to the position of the LEDs of apixel relative to each other in the first direction and the seconddirection. For example, a pixel comprising a red LED, a green LED, and ablue LED can have a packing scheme where the LEDs completely overlapeach other, partially overlap each other, and/or do not overlap eachother. The position of the first array of LEDs in the first and seconddirections can allow the first array to emit light on a firstmeta-optics panel configured to produce a first portion of a holographicimage. The position of the second array of LEDs in the first and seconddirections can allow the second array to emit light on a secondmeta-optics panel configured to produce a second portion of aholographic image. The position of the third array of LEDs in the firstand second directions can allow the third array to emit light on a thirdmeta-optics panel configured to produce a third portion of a holographicimage.

In a number of embodiments, the stacked LED hologram display can includea number of actuators configured to adjust a position of each LED of afirst array of LEDs in a first direction (e.g., x direction) and seconddirection (e.g., y direction) and an angle of rotation (α) around thex-axis, an angle of rotation (β) around the y-axis, and an angle ofrotation (γ) around the z-axis. The number of actuators can adjust aposition of each LED of a second array of LEDs in the first directionand the second direction and an angle of rotation (α) around the x-axis,an angle of rotation (β) around the y-axis, and an angle of rotation (γ)around the z-axis. The number of actuators can adjust a position of eachLED of a third array of LEDs in the first direction and the seconddirection and an angle of rotation (α) around the x-axis, an angle ofrotation (β) around the y-axis, and an angle of rotation (γ) around thez-axis. The actuators can be configured to adjust the position of thearrays of LEDs in the first direction and second direction to control apacking scheme of the pixels of the display and/or an angle at whichlight emitted from the LED arrays is received by a meta-optics panel. Apacking scheme can refer to the position of the LEDs of a pixel relativeto each other in the first direction and second direction. For example,a pixel comprising a red LED, a green LED, and a blue LED can have apacking scheme where the LEDs completely overlap each other, partiallyoverlap each other, and/or do not overlap each other. The position ofthe LEDs in the first array of LEDs in the first and second directionsand angles of rotation around the x, y, and z axes can allow the firstarray to emit light on a meta-optics panel configured to produce a firstportion (e.g., red light) of a holographic image. The position of theLEDs in the second array of LEDs in the first and second directions andangles of rotation around the x, y, and z axes can allow the secondarray to emit light on the meta-optics panel configured to produce asecond portion (e.g., green light) of the holographic image. Theposition of the LEDs in the third array of LEDs in the first and seconddirections and angles of rotation around the x, y, and z axes can allowthe third array to emit light on the meta-optics panel configured toproduce a third portion (e.g., blue light) of the holographic image.

In a number of embodiments, each of the LEDs in the stack of LED arrayscan be individually controlled, activated, and deactivated. The LEDs canbe individually controlled, activated, and deactivated to control powerconsumption of the device and/or control the intensity of the lightemitted from each of the LEDs.

As used herein, designators such as “N,” “M,” etc., particularly withrespect to reference numerals in the drawings, indicate that a number ofthe particular feature so designation can be included. It is also to beunderstood that the terminology used herein is for the purpose ofdescribing particular embodiments only and is not intended to belimiting. As used herein, the singular forms “a,” “an,” and “the” caninclude both singular and plural referents, unless the context clearlydictates otherwise. In addition, “a number of,” “at least one,” and “oneor more” (e.g., a number of memory devices) can refer to one or morememory devices, whereas a “plurality of” is intended to refer to morethan one of such things. Furthermore, the words “can” and “may” are usedthroughout this application in a permissive sense (i.e., having thepotential to, being able to), not in a mandatory sense (i.e., must). Theterm “include,” and derivations thereof, means “including, but notlimited to.” The terms “coupled,” and “coupling” mean to be directly orindirectly connected physically or for access to and movement(transmission) of commands and/or data, as appropriate to the context.The terms “data” and “data values” are used interchangeably herein andcan have the same meaning, as appropriate to the context.

The figures herein follow a numbering convention in which the firstdigit or digits correspond to the figure number and the remaining digitsidentify an element or component in the figure. Similar elements orcomponents between different figures can be identified by the use ofsimilar digits. For example, 104 can reference element “04” in FIG. 1 ,and a similar element can be referenced as 204 in FIG. 2 . As will beappreciated, elements shown in the various embodiments herein can beadded, exchanged, and/or eliminated so as to provide a number ofadditional embodiments of the present disclosure. In addition, theproportion and/or the relative scale of the elements provided in thefigures are intended to illustrate certain embodiments of the presentdisclosure and should not be taken in a limiting sense.

FIG. 1 is a functional block diagram a stacked light emitting diode(LED) display 100 in accordance with a number of embodiments of thepresent disclosure. Display 100 includes controller 110 (e.g., aprocessor, control circuitry, hardware, firmware, and/or software), afirst array of LEDs 104-1, a second array of LEDs 104-2, a third arrayof LEDs 104-3, a first meta-optics panel 106-1, a second meta-opticspanel 106-2, and a third meta-optics panel 106-3. First array 104-1,second array 104-2, and third array 104-3 can be configured in a stackand can be parallel to each other. For example, array 104-3 can be ontop of array 104-2 and array 104-2 can be on top of array 104-1. Firstmeta-optics panel 106-1 can be positioned between array 104-1 and 104-2and be configured to receive light from array 104-1, second meta-opticspanel 106-2 can be positioned between array 104-2 and 104-3 and beconfigured to received light from array 104-2, and third meta-opticspanel 106-3 can be positioned above array 104-3 and be configured toreceive light from array 104-3. A number of embodiments, can include onemeta-optics panel 106 that is positioned above array 104-3 and isconfigured to receive light from array 104-1, 104-2, and 104-3.

First array 104-1, second array 104-2, and third array 104-3 can bemicro-LED arrays, where each micro-LED can be controlled and provideslight for a pixel of display 100. First array 104-1 can be configured toemit red light, second array 104-2 can be configured to emit greenlight, and third array 104-3 can be configured to emit blue light, suchthat display 100 produces an image (e.g., a holographic image in a redgreen blue (RGB) format).

The display 100 may be a television display, a computer monitor display,and/or a touchscreen display of a mobile device, such as a smartphone,for example and be configured to display a holographic image (e.g.,hologram). The controller 110 can be communicatively coupled to the LEDarrays 104-1, 104-2, and 104-3 of display 100. As used herein,“communicatively coupled” can include coupled via various wired and/orwireless connections between devices such that data can be transferredin various directions between the devices. The coupling need not be adirect connection, and in some examples, can be an indirect connection.Controller 110 can include hardware, firmware, and/or software tocontrol the LED arrays 104-1, 104-2, and 104-3 of display 100.Controller 110 can send signals to arrays 104-1, 104-2, and 104-3 toactivate and/or deactivate the LEDs. LED arrays 104-1, 104-2, and 104-3can include circuitry and electrodes such that each LED is controllable(e.g., addressable) by controller 110. Controller 110 can individuallyactivate and/or deactivate each LED of arrays 104-1, 104-2, and 104-3.

In a number of embodiments, display 100 can received inputs from acamera, a computer, and/or an internet of things (IoT) device, amongother input devices, to produce a holographic image. For example, acamera used during a medical procedure can provide an input to display100 such that a holographic image of the portion of the body and medicalinstruments used during the medical procedure are displayed. Display 100could also receive inputs to display holographic images that couldprovide instructions for assembling and/or fixing objects, a 3dimensional view when arranging objects, and/or a 3-dimensional viewindicating an inventory status (e.g., a refrigerator or pantry), amongother inputs.

FIGS. 2 is a functional block diagram of a stacked light emitting diode(LED) hologram display including arrays of LEDs, meta-optics panels, anda number of actuators in accordance with a number of embodiments of thepresent disclosure. FIG. 2 includes display an exploded view of LEDarrays 204-1, 204-2, and 204-3 and meta-optics panels 206-1, 206-2, and206-3 of display 200. Each LED array 204-1, 204-2, and 204-3 can includea number of LEDs 205 arranged in row and columns. In FIG. 2 , each LEDarray 204-1, 204-2, and 204-3 includes 16 LEDs arranged in 4 rows and 4columns. LED arrays 204-1, 204-2, and 204-3 can have any number of rowsand columns of LEDS and in a number of embodiments have thousands ofrows and columns of LEDs. FIG. 2 includes 4 rows and 4 columns for easeof illustration.

In a number of embodiments, display 200 can include a number pixels,where an LED at a particular row and column position of each LED array204-1, 204-2, and 204-3 comprise a pixel. For example, in FIGS. 2 , apixel of display 200 comprises LED 205-1 in row 4, column 2 of array204-1, LED 205-2 in row 4, column 2 of array 204-2, and LED 205-3 in row4, column 2 of array 204-3. The pixel that includes LEDs 205-1, 205-2,and 205-3 can include light emitted from LEDs 205-1, 205-2, and 205-3.The pixel that includes LEDs 205-1, 205-2, and 205-3 can emit light thatis part of an RGB holographic image, where LED 205-1 can be configuredto emit red light, LED 205-2 can be configured to emit green light, andLED 205-3 can be configured to emit blue light.

Display 200 can include a number of actuators 222-1 that are configuredto move array 204-1 in the first direction (e.g., x direction) and anumber of actuators 224-1 that are configured to move array 204-1 in thesecond direction (e.g., y direction). Display 200 can include a numberof actuators 222-2 that are configured to move array 204-2 in the firstdirection (e.g., x direction) and a number of actuators 224-2 that areconfigured to move array 204-2 in the second direction (e.g., ydirection). Display 200 can include a number of actuators 222-3 that areconfigured to move array 204-3 in the first direction (e.g., xdirection) and a number of actuators 224-3 that are configured to movearray 204-3 in the second direction (e.g., y direction). Actuators222-1, 224-1, 222-2, 224-2, 222-3, and 224-3 can be configured to movearrays 204-1, 204-2, and 204-3 to control the packing scheme of the LEDsof arrays 204-1, 204-2, and 204-3. The packing scheme can be theposition of an LED of a pixel relative to the other LEDs of the pixel.For example, actuators 222-1 can move array 204-1 to the right such thatthe LEDS in array 204-1 are offset in the first direction relative tothe LEDs of array 204-2 and 204-3. The packing scheme of the pixels canbe controlled to control image properties of the holographic imagedisplayed by display 200. For example, the packing scheme can be changedto control the illumination intensity, brightness, color gamut, graylevel, contrast, uniformity, resolution, saturation, white balance,and/or spectral sensitivity, among other image properties, ofholographic images displayed by display 200.

Meta-optics panel 206-1 can be configured to receive light from array204-1 and be configured to display a first portion (e.g., red light) ofa holographic image. Meta-optics panel can receive light from an arrayand transmit light through the panel to project a holographic image(e.g., by shaping and enhancing the light emitted by the array).Meta-optics panel 206-2 can be configured to receive light from array204-2 and be configured to display a second portion (e.g., green light)of a holographic image. Meta-optics panel 206-3 can be configured toreceive light from array 204-3 and be configured to display a thirdportion (e.g., blue light) of a holographic image. In a number ofembodiments, where the actuators are configured to adjust the positionof the arrays and/or LEDs in the first direction and the seconddirection, but not the angles of rotation (e.g., the arrays and/or LEDshave fixed angles of rotation), such as in FIG. 2 , each array isassociated with a meta-optics panel to produce a portion of aholographic image.

FIGS. 3 is a functional block diagram of a stacked light emitting diode(LED) hologram display including arrays of LEDs, a meta-optics panel,and a number of actuators in accordance with a number of embodiments ofthe present disclosure. FIG. 3 includes display an exploded view of LEDarrays 304-1, 304-2, and 304-3 of display 300 and meta-optics panel 306.Each LED array 304-1, 304-2, and 304-3 can include a number of LEDs 305arranged in row and columns. In FIG. 3 , each LED array 304-1, 304-2,and 304-3 includes 16 LEDs arranged in 4 rows and 4 columns. LED arrays304-1, 304-2, and 304-3 can have any number of rows and columns of LEDSand in a number of embodiments have thousands of rows and columns ofLEDs. FIG. 3 includes 4 rows and 4 columns for ease of illustration.

In a number of embodiments, display 300 can include a number pixels,where an LED at a particular row and column position of each LED array304-1, 304-2, and 304-3 comprise a pixel. For example, in FIGS. 3 , apixel of display 300 comprises LED 305-1 in row 4, column 2 of array304-1, LED 305-2 in row 4, column 2 of array 304-2, and LED 305-3 in row4, column 2 of array 304-3. The pixel that includes LEDs 305-1, 305-2,and 305-3 can include light emitted from LEDs 305-1, 305-2, and 305-3.The pixel that includes LEDs 305-1, 305-2, and 305-3 can emit light thatis part of an RGB holographic image, where LED 305-1 can be configuredto emit red light, LED 305-2 can be configured to emit green light, andLED 305-3 can be configured to emit blue light.

Display 300 can include a number of actuators 322-1 that are configuredto individually move each LED of array 304-1 in the first direction(e.g., x direction), a number of actuators 324-1 that are configured toindividually move each LED of array 304-1 in the second direction (e.g.,y direction), and a number of actuators 326-1 that are configured toadjust an angle of rotation (α) around the x-axis, an angle of rotation(β) around the y-axis, and an angle of rotation (γ) around the z-axisfor each LED of array 304-1. The number of actuators 322-1 can beconfigured such that each LED of array 304-1 is coupled to one actuatorof the number of actuators 322-1 and to individually control movement ofeach LED in the first direction. The number of actuators 324-1 can beconfigured such that each LED of array 304-1 is coupled to one actuatorof the number of actuators 324-1 and to individually control movement ofeach LED in the second direction. The number of actuators 326-1 can beconfigured such that each LED of array 304-1 is coupled to one actuatorof the number of actuators 326-1 and to individually control an angle ofrotation (α) around the x-axis, an angle of rotation (β) around they-axis, and an angle of rotation (γ) around the z-axis for each LED ofarray 304-1.

Display 300 can include a number of actuators 322-2 that are configuredto individually move each LED of array 304-2 in the first direction(e.g., x direction), a number of actuators 324-2 that are configured toindividually move each LED of array 304-2 in the second direction (e.g.,y direction), and a number of actuators 326-2 that are configured toadjust an angle of rotation (α) around the x-axis, an angle of rotation(β) around the y-axis, and an angle of rotation (γ) around the z-axisfor each LED of array 304-2. The number of actuators 322-2 can beconfigured such that each LED of array 304-2 is coupled to one actuatorof the number of actuators 322-2 and to individually control movement ofeach LED in the first direction. The number of actuators 324-2 can beconfigured such that each LED of array 304-2 is coupled to one actuatorof the number of actuators 324-2 and to individually control movement ofeach LED in the second direction. The number of actuators 326-2 can beconfigured such that each LED of array 304-2 is coupled to one actuatorof the number of actuators 326-2 and to individually control an angle ofrotation (α) around the x-axis, an angle of rotation (β) around they-axis, and an angle of rotation (γ) around the z-axis for each LED ofarray 304-2.

Display 300 can include a number of actuators 322-3 that are configuredto individually move each LED of array 304-3 in the first direction(e.g., x direction) and a number of actuators 324-3 that are configuredto individually move each LED of array 304-3 in the second direction(e.g., y direction), and a number of actuators 326-3 that are configuredto adjust an angle of rotation (α) around the x-axis, an angle ofrotation (β) around the y-axis, and an angle of rotation (γ) around thez-axis for each LED of array 304-3. The number of actuators 322-3 can beconfigured such that each LED of array 304-3 is coupled to one actuatorof the number of actuators 322-3 and to individually control movement ofeach LED in the first direction. The number of actuators 324-3 can beconfigured such that each LED of array 304-3 is coupled to one actuatorof the number of actuators 324-3 and to individually control movement ofeach LED in the second direction. The number of actuators 326-3 can beconfigured such that each LED of array 304-3 is coupled to one actuatorof the number of actuators 326-3 and to individually control an angle ofrotation (α) around the x-axis, an angle of rotation (β) around they-axis, and an angle of rotation (γ) around the z-axis for each LED ofarray 304-3.

Actuators 322-1, 324-1, 326-1, 322-2, 324-2, 326-2, 322-3, 324-3, and326-3 can be configured to individually move each of the LEDs of arrays304-1, 304-2, and 304-3 to control the packing scheme and angle ofrotation of the pixels comprising the LEDs of arrays 304-1, 304-2, and304-3. The packing scheme can be the position of an LED of a pixelrelative to the other LEDs of the pixel. For example, actuators 322-1can move LED 305-1 to the right such that LED 305-1 in array 304-1 isoffset in the first direction relative to the LED 305-2 of array 304-2and LED 305-3 of array 304-3. The packing scheme and angles of rotationaround the x, y, and z axes can allow the first array to emit light onmeta-optics panel 306 configured to produce a first portion (e.g., redlight) of a holographic image. The position of the LEDs in the secondarray of LEDs in the first and second directions and angles of rotationaround the x, y, and z axes can allow the second array to emit light onmeta-optics panel 306 configured to produce a second portion (e.g.,green light) of the holographic image. The position of the LEDs in thethird array of LEDs in the first and second directions and angles ofrotation around the x, y, and z axes can allow the third array to emitlight on meta-optics panel 306 configured to produce a third portion(e.g., blue light) of the holographic image The packing scheme of thepixels can be controlled to control image properties of the imagedisplayed by display 300. For example, the packing scheme can be changedto control the brightness, color gamut, gray level, contrast,uniformity, resolution, saturation, white balance, and/or spectralsensitivity, among other image properties, of images displayed bydisplay 300. In a number of embodiments, where actuator are configuredto control movement of each LED of the LED arrays in the first directionand second direction and control angles of rotation around the x, y, andz axes for each LED of the LED arrays, one meta-optics panel (e.g. panel306 of FIG. 3 ) can be configured to produce a holographic image withred light, green light, and blue light.

FIGS. 4A-4B are functional block diagrams in the form of an apparatushaving a stacked light emitting diode (LED) hologram display including acontroller in accordance with a number of embodiments of the presentdisclosure. In FIG. 4A, display 400 can include substrate 412, firstarray of LEDs 404-1, second array of LEDs 404-2, third array of LEDs404-3, first meta-optics panel 406-1, second meta-optics panel 406-2,third meta-optics panel 406-3, cover 414, and controller 410. Display400 can include first array of LEDs 404-1, second array of LEDs 404-2,and third array of LEDs 404-3 formed on substrate 412. First array ofLEDs 404-1, second array of LEDs 404-2, and third array of LEDs 404-3can be stacked on each other and configured such that light emitted fromthe first array of LEDs 404-1 is directed to first meta-optics panel406-1 that is configured to display a first portion of a holographicimage, light emitted from the second array of LEDs 404-2 is directed tosecond meta-optics panel 406-2 that is configured to display a secondportion of a holographic image, and light emitted from the third arrayof LEDs 404-3 is directed to third meta-optics panel 406-3 that isconfigured to display a third portion of a holographic image. Cover 414can be comprised of glass and other materials, such as polarizers. Cover414 can protect the arrays of LEDs from damage.

In FIG. 4B, display 400 can include substrate 412, first array of LEDs404-1, second array of LEDs 404-2, third array of LEDs 404-3,meta-optics panel 406, cover 414, and controller 410. Display 400 caninclude first array of LEDs 404-1, second array of LEDs 404-2, and thirdarray of LEDs 404-3 formed on substrate 412. First array of LEDs 404-1,second array of LEDs 404-2, and third array of LEDs 404-3 can be stackedon each other and configured such that light emitted from the firstarray of LEDs 404-1 is directed to meta-optics panel 406 that isconfigured to display a first portion of a holographic image, lightemitted from the second array of LEDs 404-2 is directed to meta-opticspanel 406 that is configured to display a second portion of aholographic image, and light emitted from the third array of LEDs 404-3is directed to meta-optics panel 406 that is configured to display athird portion of a holographic image. First array of LEDs 404-1, secondarray of LEDs 404-2, and third array of LEDs 404-3 can be moved byactuators to control movement of each LED of the LED arrays in the firstdirection (e.g., x direction) and second direction (e.g., y direction)and control angles of rotation around the x, y, and z axes for each LEDof the LED arrays and meta-optics panel 406 can be configured to producea holographic image with red light, green light, and blue light from thefirst array of LEDs 404-1, second array of LEDs 404-2, and third arrayof LEDs 404-3, respectively.

First array of LEDs 404-1, second array of LEDs 404-2, and third arrayof LEDs 404-3 can be coupled to controller 410 and can be configured toreceive signals from controller 410 to activate and deactivate the LEDs.In a number of embodiments, controller 410 can send a signal or signalsto individually activate and/or deactivate each LED of first array ofLEDs 404-1, second array of LEDs 404-2, and third array of LEDs 404-3.For example, controller 410 can send signals to the first array of LEDs404-1, second array of LEDs 404-2, and third array of LEDs 404-3 suchthat only a portion of the LEDs of the first array of LEDs 404-1, secondarray of LEDs 404-2, and third array of LEDs 404-3 are activated. Thecontroller can activate only a portion of the LEDs of first array ofLEDs 404-1, second array of LEDs 404-2, and third array of LEDs 404-3 tocontrol the power consumption of display 400. Also, controller 410 cansend signals with various magnitudes to control the light emitted by theLEDs of the first array of LEDs 404-1, second array of LEDs 404-2, andthird array of LEDs 404-3. The signals and the magnitude of the signalssent by controller 410 to the first array of LEDs 404-1, second array ofLEDs 404-2, and third array of LEDs 404-3 can control the illuminationintensity, brightness, color gamut, gray level, contrast, uniformity,resolution, saturation, white balance, and/or spectral sensitivity,among other image properties, of holographic images displayed by display400. Controller 410 can monitor the properties of the holographic imagethat is displayed by display 400 and change the signals sent to thefirst array of LEDs 404-1, second array of LEDs 404-2, and third arrayof LEDs 404-3 to change and/or improve the properties of the holographicimage displayed by display 400. For example, controller 410 can changethe brightness of the images based on the environment where the image isbeing displayed. Also, controller 410 can change signals sent to thefirst array of LEDs 404-1, second array of LEDs 404-2, and third arrayof LEDs 404-3 to improve image quality. Controller 410 can also receiveuser input to change the signals sent to the first array of LEDs 404-1,second array of LEDs 404-2, and third array of LEDs 404-3.

FIGS. 5A-5C illustrate packing schemes of a stacked light emitting diode(LED) display in accordance with a number of embodiments of the presentdisclosure. FIGS. 5A-5C illustrates packing schemes of 4 pixels, pixel540-1, pixel 540-2, pixel 540-3, and pixel 540-4. Pixels 540-1, 540-2,540-3, and 540-4 can include LEDs from a row of arrays of LEDs, such asa first row of arrays 204-1, 204-2, and 204-3 of FIG. 2 or a first rowof arrays of 304-2, 304-2, and 304-3 of FIG. 3 , for example. FIGS.5A-5C illustrate a top down view of pixels 540-1, 540-2, 540-3, and540-4, such the pixels comprising the LEDs from arrays of LEDs arestacked on each other.

FIG. 5A includes a packing scheme where the LEDs of pixels 540-1, 540-2,540-3, and 540-4 are not offset and completely overlap. In FIG. 5A,pixel 540-1 includes LED 505-1-3 from a third array of LEDs and an LEDfrom a second array (not shown due to the packing scheme not includingan offset) and an LED from a first array (not shown due to the packingscheme not including an offset). Pixel 540-2 includes LED 505-2-3 from athird array of LEDs and an LED from a second array (not shown due to thepacking scheme not including an offset) and an LED from a first array(not shown due to the packing scheme not including an offset). Pixel540-3 includes LED 505-3-3 from a third array of LEDs and an LED from asecond array (not shown due to the packing scheme not including anoffset) and an LED from a first array (not shown due to the packingscheme not including an offset). Pixel 540-4 includes LED 505-4-3 from athird array of LEDs and an LED from a second array (not shown due to thepacking scheme not including an offset) and an LED from a first array(not shown due to the packing scheme not including an offset). In anumber of embodiments, a controller can send signals to actuators (e.g.,actuators 222 and 224 in FIGS. 2 and 322 and 324 in FIG. 3 ) to movearrays and/or LEDs such that the pixels have a packing scheme that isaligned and there is no offset of the LEDs in the first or seconddirection (e.g., x or y direction).

FIG. 5B includes a packing scheme were the LEDs of pixels 540-1, 540-2,540-3, and 540-4 are offset and partially overlap. In FIG. 5B, pixel540-1 includes LED 505-1-1 from a first array of LEDs, LED 505-1-2 froma second array of LEDs that is offset in the first direction (e.g., xdirection) and second direction (e.g., y direction) relative to LED505-1-1, and LED 505-1-3 from a third array of LEDs that is offset inthe first direction and second direction relative to LED 505-1-1, suchthat LEDs 505-1-1, 505-1-2, and 505-1-3 partially overlap each other.Pixel 540-2 includes LED 505-2-1 from a first array of LEDs, LED 505-2-2from a second array of LEDs that is offset in the first direction andsecond direction relative to LED 505-2-1, and LED 505-2-3 from a thirdarray of LEDs that is offset in the first direction and second directionrelative to LED 505-2-1, such that LEDs 505-2-1, 505-2-2, and 505-2-3partially overlap each other. Pixel 540-3 includes LED 505-3-1 from afirst array of LEDs, LED 505-3-2 from a second array of LEDs that isoffset in the first direction and second direction relative to LED505-3-1, and LED 505-3-3 from a third array of LEDs that is offset inthe first direction and second direction relative to LED 505-3-1, suchthat LEDs 505-3-1, 505-3-2, and 505-3-3 partially overlap each other.Pixel 540-4 includes LED 505-4-1 from a first array of LEDs, LED 505-4-2from a second array of LEDs that is offset in the first direction andsecond direction relative to LED 505-4-1, and LED 505-4-3 from a thirdarray of LEDs that is offset in the first direction and second directionrelative to LED 505-4-1, such that LEDs 505-4-1, 505-4-2, and 505-4-3partially overlap each other. In a number of embodiments, a controllercan send signals to actuators (e.g., actuators 222 and 224 in FIGS. 2and 322 and 324 in FIG. 3 ) to move arrays and/or LEDs such that thepixels have a packing scheme where there is offset of the LEDs in the xand/or y direction such that the LEDs partially overlap.

FIG. 5C includes a packing scheme were the LEDs of pixels 540-1, 540-2,540-3, and 540-4 are offset and do not overlap. In FIG. 5B, pixel 540-1includes LED 505-1-1 from a first array of LEDs, LED 505-1-2 from asecond array of LEDs that is offset in the first direction (e.g., xdirection) and second direction (e.g., y direction) relative to LED505-1-1, and LED 505-1-3 from a third array of LEDs that is offset inthe first direction and second direction relative to LED 505-1-1, suchthat LEDs 505-1-1, 505-1-2, and 505-1-3 do not overlap each other. Pixel540-2 includes LED 505-2-1 from a first array of LEDs, LED 505-2-2 froma second array of LEDs that is offset in the first direction and seconddirection relative to LED 505-2-1, and LED 505-2-3 from a third array ofLEDs that is offset in the first direction and second direction relativeto LED 505-2-1, such that LEDs 505-2-1, 505-2-2, and 505-2-3 partiallyoverlap each other. Pixel 540-3 includes LED 505-3-1 from a first arrayof LEDs, LED 505-3-2 from a second array of LEDs that is offset in thefirst direction and second direction relative to LED 505-3-1, and LED505-3-3 from a third array of LEDs that is offset in the first directionand second direction relative to LED 505-3-1, such that LEDs 505-3-1,505-3-2, and 505-3-3 do not overlap each other. Pixel 540-4 includes LED505-4-1 from a first array of LEDs, LED 505-4-2 from a second array ofLEDs that is offset in the first direction and second direction relativeto LED 505-4-1, and LED 505-4-3 from a third array of LEDs that isoffset in the first direction and second direction relative to LED505-4-1, such that LEDs 505-4-1, 505-4-2, and 505-4-3 do not overlapeach other. In a number of embodiments, a controller can send signals toactuators (e.g., actuators 222 and 224 in FIGS. 2 and 322 and 324 inFIG. 3 ) to move arrays and/or LEDs such that the pixels have a packingscheme where there is offset of the LEDs in the first and/or seconddirection such that the LEDs do not overlap.

FIG. 6 is flow diagram representing an example method for operating astacked light emitting diode (LED) hologram display in accordance with anumber of embodiments of the present disclosure. At step 650, the methodcan include adjusting a position of a first array of light emittingdiodes (LEDs) in a first direction and a second direction orthogonal tothe first direction, the adjusting relative to an origin point of thefirst array, wherein the first array of LEDs are configured to emit redlight in a red green blue (RGB) hologram display.

At step 652, the method can include displaying a first portion of aholographic image by a first meta-optics panel from light emitted by thefirst array.

At step 654, the method can include adjusting a position of a secondarray of LEDs in the first direction and the second direction relativeto an origin point of the second array, wherein the second array of LEDsare configured to emit green light in the RGB display.

At step 656, the method can include displaying a second portion of theholographic image by a second meta-optics panel from light emitted bythe second array.

At step 658, the method can include adjusting a position of a secondarray of LEDs in the first direction and the second direction relativeto an origin point of the third array, wherein the third array of LEDsare configured to emit blue light in the RGB display.

At step 660, the method can include displaying a third portion of theholographic image by a third meta-optics panel from light emitted by thethird array, wherein the first, second, and third arrays are stacked oneach other.

The method can also include adjusting the position of the first array ofLEDs in the first direction and the second direction offsets the firstarray of LEDs relative to the second and third array of LEDs, adjustingthe position of the second array of LEDs in the first direction and thesecond direction offsets the second array of LEDs relative to the firstand third array of LEDs, and adjusting the position of the third arrayof LEDs in the first direction and the second direction offsets thethird array of LEDs relative to the first and second array of LEDs.

The method can include providing signals to the first array of LEDs, thesecond array of LEDs, and the third array of LEDs to change anillumination intensity of the LEDs and providing signals to the firstarray of LEDs, the second array of LEDs, and the third array of LEDs todeactivate at least a portion of one of the first array of LEDs, thesecond array of LEDs, and the third array of LEDs.

Although specific embodiments have been illustrated and describedherein, those of ordinary skill in the art will appreciate that anarrangement calculated to achieve the same results can be substitutedfor the specific embodiments shown. This disclosure is intended to coveradaptations or variations of one or more embodiments of the presentdisclosure. It is to be understood that the above description has beenmade in an illustrative fashion, and not a restrictive one. Combinationof the above embodiments, and other embodiments not specificallydescribed herein will be apparent to those of skill in the art uponreviewing the above description. The scope of the one or moreembodiments of the present disclosure includes other applications inwhich the above structures and processes are used. Therefore, the scopeof one or more embodiments of the present disclosure should bedetermined with reference to the appended claims, along with the fullrange of equivalents to which such claims are entitled.

In the foregoing Detailed Description, some features are groupedtogether in a single embodiment for the purpose of streamlining thedisclosure. This method of disclosure is not to be interpreted asreflecting an intention that the disclosed embodiments of the presentdisclosure have to use more features than are expressly recited in eachclaim. Rather, as the following claims reflect, inventive subject matterlies in less than all features of a single disclosed embodiment. Thus,the following claims are hereby incorporated into the DetailedDescription, with each claim standing on its own as a separateembodiment.

1-20. (canceled)
 21. A method, comprising: adjusting a position of afirst array of light emitting diodes (LEDs) relative to an origin pointof the first array, wherein the first array of LEDs are configured toemit red light in a red green blue (RGB) hologram display; displaying afirst portion of a holographic image by a first meta-optics panel fromlight emitted by the first array; adjusting a position of a second arrayof LEDs relative to an origin point of the second array, wherein thesecond array of LEDs are configured to emit green light in the RGBdisplay; displaying a second portion of the holographic image by asecond meta-optics panel from light emitted by the second array;adjusting a position of a second array of LEDs relative to an originpoint of the third array, wherein the third array of LEDs are configuredto emit blue light in the RGB display and; and displaying a thirdportion of the holographic image by a third meta-optics panel from lightemitted by the third array, wherein the first, second, and third arraysare stacked on each other.
 22. The method of claim 21, furthercomprising adjusting the position of the first array of LEDs in a firstdirection and a second direction offsets the first array of LEDsrelative to the second and third array of LEDs.
 23. The method of claim21, further comprising adjusting the position of the second array ofLEDs in a first direction and a second direction offsets the secondarray of LEDs relative to the first and third array of LEDs.
 24. Themethod of claim 21, further comprising adjusting the position of thethird array of LEDs in a first direction and a second direction offsetsthe third array of LEDs relative to the first and second array of LEDs.25. The method of claim 21, wherein the first array of LEDs, the secondarray of LEDs, and the third array of LEDs are parallel to each other ata fixed angle.
 26. The method of claim 21, further comprising providingsignals to the first array of LEDs, the second array of LEDs, and thethird array of LEDs to change an illumination intensity of the LEDs. 27.The method of claim 21, further comprising providing signals to thefirst array of LEDs, the second array of LEDs, and the third array ofLEDs to deactivate at least a portion of one of the first array of LEDs,the second array of LEDs, and the third array of LEDs.
 28. An apparatus,comprising: a first array of light emitting diodes (LED), wherein eachLED of the first array are configured to emit red light received by afirst meta-optics panel configured to display a first portion of aholographic image and wherein the first array is coupled to acontroller: a second array of LEDs, wherein each LED of the second arrayare configured to emit green light received by a second meta-opticspanel configured to display a second portion of the holographic imageand wherein the second array is coupled to the controller; and a thirdarray of LEDs, wherein each LED of the third array are configured toemit blue light received by a third meta-optics panel configured todisplay a third portion of the holographic image, wherein the thirdarray is coupled to the controller, and wherein the controller isconfigured to: send a first number of signals to a first actuatorconfigured to move the first array, send a second number of signals to asecond actuator to move the second array, and send a third number ofsignals to move the third array, wherein moving the first array, thesecond array, and the third array controls a packing scheme of thefirst, second, and third arrays.
 29. The apparatus of claim 28, whereinthe first actuator is configured to move the first array to offset theLEDs of the first array relative to the LEDs of the second and thirdarrays.
 30. The apparatus of claim 28, wherein the second actuator isconfigured to move the second array to offset the LEDs of the secondarray relative to the LEDs of the first and third arrays.
 31. Theapparatus of claim 28, wherein the third actuator is configured to movethe third array to offset the LEDs of the third array relative to theLEDs of the first and second arrays.
 32. The apparatus of claim 28,wherein the first, second, and third actuators are configured to movethe first, second and third arrays in a first direction and a seconddirection to change the packing scheme of the first, second, and thirdarrays that are stacked on each other.
 33. The apparatus of claim 28,wherein the control circuitry is configured to provide signals to thefirst, second, and third arrays to change illumination intensity of theapparatus by activating at least a portion of the first, second, andthird arrays.
 34. The apparatus of claim 28, wherein the controlcircuitry is configured to provide signals to the first, second, andthird arrays to control power consumption of the apparatus by activatingat least a portion of the first, second, and third arrays.
 35. Anapparatus, comprising: a first array of light emitting diodes (LED),wherein each LED of the first array are configured to emit red lightreceived by a meta-optics panel configured to display a first portion ofa holographic image and wherein the first array is coupled to acontroller: a second array of LEDs, wherein each LED of the second arrayare configured to emit green light received by the meta-optics panelconfigured to display a second portion of the holographic image andwherein the second array is coupled to the controller; and a third arrayof LEDs, wherein each LED of the third array are configured to emit bluelight received by the meta-optics panel configured to display a thirdportion of the holographic image, wherein the third array is coupled tothe controller, wherein the first, second, and third array are stackedon each other, and wherein the controller is configured to: send a firstnumber of signals to a first number of actuators configured to move eachof the LEDs in the first array and rotate each of the LEDs in the firstarray, send a second number of signals to a second number of actuatorsto move each of the LEDs in the second array and rotate each of the LEDsin the second array, and send a third number of signals to a thirdnumber of actuators configured to move each of the LEDs in the thirdarray and rotate each of the LEDs in the third array.
 36. The apparatusof claim 35, wherein the control circuitry is configured to send afourth number of signals to control intensity of each of the LEDs of thefirst, second, and third arrays.
 37. The apparatus of claim 35, whereinthe control circuitry is configured to send a fifth number of signals toturn on a portion of the LEDs of the first, second, and third arrays.38. The apparatus of claim 35, wherein a position with respect to afirst direction and a second direction of each LED of the first arrayoverlaps with a position with respect to the first direction and seconddirection of each LED of the second array.
 39. The apparatus of claim35, wherein first, second, and third number of signals can be controlledby user input.
 40. The apparatus of claim 35, wherein the first numberof signals, the second number of signals, and the third number ofsignals are configured to control a packing scheme of the first, secondand third arrays.